http://tchester.org/sb/plants/guides/tram_sidewalk.html
Plant Guide to Palm Springs Tramway Sidewalk, San Jacinto Mountains Here is an example of how to use the guide. You begin at the Jeffrey pine on your left, which is the only Jeffrey pine noted in the guide. There are many Jeffrey pines along this sidewalk; the estimate we put in the guide is 20 plants in at least 9 locations. At about 3 steps after the Jeffrey pine, there are two species visible in the distance to your right, sugar pine and green-leaf manzanita. You then have to walk 15 steps to the next species, the Grinnell's beardtongue. After two more steps you'll find the curl-leaf mountain-mahogany on your right. There are at least 20 plants of this species in at least 4 locations. Also on the right, next to the curl-leaf mountain-mahogany, is the San Bernardino rubber rabbitbrush. Immediately following those species the concrete sidewalk makes a sharp curve left, which is called a switchback.
An explanation of all the columns is at the end of the guide.
# Steps S # id? Common Name Latin Name #here 0 l Begin guide at top of concrete sidewalk next to Tram Elevator Entrance; elevation ~8500 feet (2591 m) 0 l 1 Jeffrey pine Pinus jeffreyi 20 / 9 3 r (sugar pine, Pinus lambertiana at top of ridge; green-leaf manzanita, Arctostaphylos patula 20 feet uphill on closed access road) 15 b 2 Grinnell's beardtongue Penstemon grinnellii var. grinnellii 99 / 5 2 Switchback left 0 r 3 curl-leaf mountain-mahogany Cercocarpus ledifolius 20 / 4 0 r 4 San Bernardino rubber rabbitbrush Ericameria nauseosa var. bernardina 99 / 9 13 r 6 white fir Abies concolor 8 / 5 16 Switchback right 20 r 5 San Jacinto Mts. keckiella Keckiella rothrockii var. jacintensis 20 / 2 8 r 7 canyon live oak Quercus chrysolepis 5 / 2 0 Switchback left 44 l 8 wild tarragon Artemisia dracunculus 3 / 2 7 l 9 sugar pine Pinus lambertiana 3 / 1 1 Switchback right 60 Switchback left 30 l 10 Fremont's goosefoot Chenopodium fremontii 3 / 1 24 Switchback right 86 r (Parish's campion, Silene parishii) 0 r (Parish's bedstraw, Galium parishii) 17 r 11 goldenrod Solidago velutina ssp. californica 30 / 1 13 r 12 granite prickly phlox Linanthus pungens 10 / 2 0 r 13 short-flowered monardella Monardella nana 12 / 1 l (Parish's snowberry, Symphoricarpos rotundifolius var. parishii) 42 r 14 Parish's bedstraw Galium parishii 15 / 1 18 l (woodland spurge, Euphorbia lurida; wax currant, Ribes cereum var. cereum) 20 r (mountain California-fuchsia, Epilobium canum ssp. latifolium) 2 r (California coffeeberry, Frangula californica) 21 l Sign: "Trail information"; end guide # Steps: The number of steps from the previous entry in the guide to the current entry. Your mileage (aka step size) may vary!
S: Side of trail on which the first occurrence is found: left, right, both, or center
#: Species are numbered in order of first occurrence on trail.
#here gives the minimum number of on-trail plants of this species on this trail, with the number of locations on this trail following the /, using maximum values of 99/9. 1/1 means a single plant in a single location; 10/9 means 10 plants occurring in at least 9 locations, etc.